Book-binding



(No ModeL) R. A. W. WINZENBURG. BOOK BINDING.

No. 443,588. Patented Deg). 30,1890.

; I ll BI" I B ml m E Invent-0r UNITED STATES PATENT OFFICE.

nonnn'r A. w. wmznnnunc, or ST. LOUIS, MISSOURI.

BOOK=I3INDING.

SPECIFICATION forming part cf Letters Iatent No. 443,538, dated December 30, 1890. Application filed July 25, 1890! Serial No. 359,878- (No model.)

To all whom it may concern:

Be it known that 1, ROBERT A. W. WINZEN- BURG, a citizen of the United States, residing at St. Louis,in the State of Missouri, have in vented certain new and useful Improvements in Book-Binding; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to binding books and especially blank books, where strength and durability are required.

The invention consists in connecting the leaves of a book-section together by a stitch which makes thread-loops on the outside as well as the inside of the fold and then passing through the loops of two or more sections cross-straps of parchment or other material, which are glued to the binding.

Figure 1 of the drawings is a back view of a blank book with sections connected by the outside thread-loops at the fold and the cross straps or strips; Fig. 2,a longitudinal section through the fold, showing the position of the thread.

In the drawings, A represents a single section of a blank book, consisting of several sheets of paper sewed together on the line of fold a, so as to make the outside loops to as well as the inside loops (L This loop-stitch not only binds together very securely the sheets of a section, but also provides the outer loops a,which are made to correspond in position on the several sections. Through these loops a I then pass the transverse strips 13,

which are glued to the binding. The ends of the thread may also be glued or tied near each end of the book-sections. The stitches may be made by hand or machine and of any preferred size. After the sheets of each section have been sewed together the strips B are passed through the stitch-loops, as shown in Fig. 1 of the drawings. The strips maybe of any desired number and width, leaving more or less of the loops unfilled,or all of the loops may be filled. The straps or strips may, if preferred, be sewed to the sections as the stitches are made; but the stitch must be made to bring loops on the outside as well as the inside of the fold.

I am aware that it is not new in book-binding to whipstitch several sections together by a single length of thread, so as'to bring the sections a little way from but on a line with the fold; but in blank books the stitch passing through the several sections would prevent the leaves from opening out Lat.

What I claim as new, and desire to protect by Letters Patent, is-

A blank book having the leaves of each section connected by a stitch which makes a thread-loop on the inside of the fold as well as on the outside, the sections being connected by cross-straps passing the said outside loops, as set forth.

In testimony whereof I atfix my signature in presence of two witnesses.

ROBERT A. W. WINZENBURG.

\Vitnesses:

J AMES TYSON, .Tr., J OHN GRASSMANN. 

